private void sSSToolStripMenuItem_Click(object sender, EventArgs e)
{
if (frm == null)
{
frm = new FormToolBox();
frm.MdiParent = this;
frm.Show();
}
}
public static FormToolBox GetInstance()
{
if (frm == null || frm.IsDisposed)
{
frm = new FormToolBox();
frm.MdiParent = Form1.ActiveForm;
}
return(frm);
}
